<?php
/**
 * AmplifyCMS
 *
 * This file is part of AmplifyCMS.
 *
 * AmplifyCMS is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * AmplifyCMS is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * @author Rodrigo Rutkoski Rodrigues, <rutkoski@gmail.com>
 * @copyright Copyright 2008 Rodrigo Rutkoski Rodrigues
 */

/**
 * Roles define a set of capabilities a user may have.
 *
 * @author Rodrigo Rutkoski Rodrigues, <rutkoski@gmail.com>
 */
class Role extends Entity
{

  protected $associations = array(
    array(
      'many-to-many', 'Cap', 
      array(
        'table' => 'caps_roles', 
        'tableKeyLocal' => 'role_id', 
        'tableKeyForeign' => 'cap_id'
      )
    )
  );

  private $caps;

  protected $fields = array(
    'id' => array(
      'id', 'int', 
      array(
        'pk' => true, 'autoIncrement' => true
      )
    ), 'name' => array(
      'name', 'varchar'
    ), 'level' => array(
      'level', 'int'
    )
  );

  public function getCaps()
  {
    return $this->caps;
  }

  public function setCaps($caps)
  {
    $this->caps = $caps;
  }

  public function is($role)
  {
    if (! $this->isNew() && $this->id == 1) return true;
    return $this->name == $role;
  }

  public function can($cap)
  {
    $caps = $this->getCaps();
    $can = false;
    
    foreach ($caps as $_cap) {
      $_can = $_cap->can($cap);
      if (!is_null($_can)) {
        $can = $can ? $can && $_can : $can || $_can;
      }
    }
    
    return $can;
  }
  
  public function hasLevel($level)
  {
    return $this->level > 0 && $this->level <= $level;
  }

}

?>